Sokyrko P. Effect of basic and presowing soil cultivation on the soybean productivity formation in the conditions of insecure moistening of left-bank Forest-Steppe

Subject of research - the transformation of agrophisical indices of tipical chernizem at different basic and presowing tillage methods. The aim - to establish an influense of soil tillage with various soil tilling implements upon its water-phisical properties and soybean productivity formation. The methods are field, laboratory, quantitative-weight, chemical, mathematical, computational-comparative. The effect of basic and presowing soil tillage with the use of new parented by the author combined aggregates AG-4 "Skorpion-1" and AGU-6 "Skorpion-2" on agrophisical and biological indices of typical chernozem the reduction of weed infestation level, soybean seed yield and quality is revealed. The recommendations to production concerning the technology of basic and presowing soil tillage under soybean in the conditions of insecure of the left-bank Ukrainian Forest-Steppe are worked out. The introduction of scientific development is carried out in 2009 at the farms of Poltava region over a total area 695 hectares. The field of application - the agricultural production.